Life Is Great In America's Thinnest City

Shutterstock For the third year in a row, Boulder, Colorado has been crowned the "least obese" city in America, according to newly released Gallup data.

The metro area posted a 12.5% obesity rate, less than half that of the national average of 26.2%.

Boulder's low obesity rate is largely due to the city's outdoorsy lifestyle, young population, and commitment to sustainable and healthy living.

Gallup tracks U.S. obesity levels as part of the Gallup-Healthways Well-Being Index, and uses Americans' self-reported height and weight to calculate the Body Mass Index scores (BMI scores of 30 or higher are considered obese).

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The City of Boulder has more than 60 parks with great community activities for young and old residents, such as dance, golf, gymnastics, tennis, and yoga.